Irregularities in the DIII-D divertor tile angles are used to test the dependence of deposited power on the angle of the magnetic field in the range 0–3°. Results are presented which show that the sin θ law, which is assumed in thermal design calculations for CIT and ITER divertor plates, is accurate down to 0.3°.
Scaling radiative divertor solutions to high power in DIII-D